NDLI: Algebraic model of turbulent boundary layer on a convex curvilinear surface

Content Provider	Springer Nature Link
Author	Labusov, A. N. Lapin, Yu. V.
Copyright Year	2000
Abstract	A simple algebraic model of turbulent boundary layer on convex curvilinear surfaces is suggested that is based on the generalization of the two-layer one-parameter algebraic model for a flat plate [ 1 ]. The model is tested in a wide range of variation of the curvature parameter (0.01 ≤ δ0/R w ≤ 0.09, where δ0 is the thickness of the boundary layer at the initial cross section of the curvilinear region andR w is the curvature radius of the surface), the results of which are indicative of a good agreement between the experimental and calculated data on the integral characteristics of the boundary layer, namely, the friction coefficientC f , the displacement thickness δ* and momentum thickness δ*, and the form parameterH = δ/δ**. Based on the comparison between the calculated and experimental data on the distribution of tangential turbulent stresses, a conclusion is made that the model predicts a much lower effect of the curvature on the suppression of turbulence in the outer region of boundary layers at a mild curvature of the surface (δ 0 /R w = 0.01) than in experiments. However, this difference has a tendency to decrease as the surface curvature increases. An analysis of the calculated and experimental velocity profiles plotted in the variables of the wall law leads to a conclusion that the generalized Townsend wall law is partially realized on a curvilinear surface.
Starting Page	434
Ending Page	443
Page Count	10
File Format	PDF
ISSN	0018151X
Journal	High Temperature
Volume Number	38
Issue Number	3
e-ISSN	16083156
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2007-04-25
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Atoms and Molecules in Strong Fields, Laser Matter Interaction Materials Science Classical Continuum Physics Physical Chemistry Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Condensed Matter Physics

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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